A direct link to the above video is at http://www.youtube.com/watch?v=1BscaUbwVR0
One of the things some people wrestle with as they look at my approach to visualizing the dimensions is this: isn't "time as the fourth dimension" a separate concept from 4D geometries such as hypercubes and hyperspheres? The above video is a blend of two previous text blog entries: Mandelbulbs and How to Time Travel. I find it really interesting to contemplate how our observed reality might be derived from extra-dimensional shapes and patterns as we look at these wonderful "Mandelbulb" images, which can be found at http://www.skytopia.com/project/fractal/mandelbulb.html .
Here are some other past entries where we've looked at the idea that our experience of "time" is just a unique way of viewing the fourth spatial dimension, and that ultimately there is no disconnect between the two concepts:
Hypercubes and Plato's Cave
Aren't There Really 11 Dimensions?
An Expanding 4D Sphere
A 3D Sphere on a 4D Hypersphere
Finite but Unbounded
Our Universe as a Dodecahedron
Our Universe as a Point
Enjoy the journey!